Add more express scripts

Author: linusjf

express/app404.js

@@ -0,0 +1,27 @@
+#!/usr/bin/env node
+const express = require("express");
+const app = express();
+
+app.get("/", (req, res) => {
+  res.set({ "Content-Type": "text/plain; charset=utf-8" });
+  res.send("Home page");
+});
+
+app.get("/about", (req, res) => {
+  res.set({ "Content-Type": "text/plain; charset=utf-8" });
+  res.send("About page");
+});
+
+app.get("/contact", (req, res) => {
+  res.set({ "Content-Type": "text/plain; charset=utf-8" });
+  res.send("Contact page");
+});
+
+app.use((req, res) => {
+  res.statusCode = 404;
+  res.end("404 - page not found");
+});
+
+app.listen(3000, () => {
+  console.log("Application started on port 3000");
+});

express/appsqlite.js

@@ -0,0 +1,69 @@
+#!/usr/bin/env node
+const express = require("express");
+const sqlite3 = require("sqlite3").verbose();
+const app = express();
+const db = new sqlite3.Database("data/test.db");
+
+app.get("/", (req, res) => {
+  res.set({ "Content-Type": "text/plain; charset=utf-8" });
+  res.send("Home page");
+});
+
+app.get("/cities", (req, res) => {
+  const sql = "select * from cities";
+  const params = [];
+
+  db.all(sql, params, (err, rows) => {
+    if (err) {
+      res.status(400).json({"error": err.message});
+      return;
+    }
+
+    if (!rows) {
+      res.status(204).json({"error": "No cities found"});
+      return;
+    }
+    res.json({
+      "message":"success",
+      "data":rows
+    });
+  });
+});
+
+app.get("/city/:id", (req, res) => {
+  const sql = "select * from cities where id = ?";
+  const params = [req.params.id];
+
+  db.get(sql, params, (err, row) => {
+
+    if (err) {
+      res.status(400).json({"error":err.message});
+      return;
+    }
+
+    if (!row) {
+      res.status(204).json({"error": "City not found"});
+      return;
+    }
+
+    res.json({
+      "message":"success",
+      "data":row
+    });
+  });
+});
+
+const server = app.listen(3000, () => {
+  console.log("Application started on port 3000");
+});
+
+process.on("SIGINT", () => {
+  db.close((err) => {
+    console.log("Application terminating");
+    if (err) {
+      console.error(err.message);
+    }
+    console.log("Closing the database connection.");
+  });
+  server.close();
+});

express/apptempl.js

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+#!/usr/bin/env node
+const express = require("express");
+const path = require("path");
+const { Liquid } = require("liquidjs");
+
+const app = express();
+const engine = new Liquid();
+
+app.engine("liquid", engine.express());
+app.set("views", path.resolve(__dirname, "views"));
+app.set("view engine", "liquid");
+
+app.get("/today", (req, res) => {
+  let today = new Date();
+  res.render("showdate", {now: today});
+});
+
+app.use((req, res) => {
+  res.statusCode = 404;
+  res.end("404 - page not found");
+});
+
+app.listen(3000, () => {
+  console.log("Application started on port 3000");
+});